284565701809 has 3 divisors (see below), whose sum is σ = 284566235257. Its totient is φ = 284565168362.

The previous prime is 284565701737. The next prime is 284565701863. The reversal of 284565701809 is 908107565482.

It is a happy number.

The square root of 284565701809 is 533447.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 284565701809 - 2¹³ = 284565693617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 284565701809.

It is not an unprimeable number, because it can be changed into a prime (284565701879) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 266724 + ... + 800170.

Almost surely, 2^284565701809 is an apocalyptic number.

284565701809 is the 533447-th square number.

284565701809 is the 266724-th centered octagonal number.

It is an amenable number.

284565701809 is a deficient number, since it is larger than the sum of its proper divisors (533448).

284565701809 is an frugal number, since it uses more digits than its factorization.

284565701809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066894 (or 533447 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 284565701809 in words is "two hundred eighty-four billion, five hundred sixty-five million, seven hundred one thousand, eight hundred nine".